On Sun, 19 Jan 2025 at 11:37, Petr Olsak <[email protected]> wrote: > Hello > > I am testing new luahbtex and comparing it with luatex because I am > considering to set OpTeX with luahbtex engine instead luatex in TeXlive > 2025. > I have found a difference between lautex and luahbtex behavior which I > am unable to explain why. The difference is shown only when huge number of > fonts are downloaded by luaotfload and only with selected fonts from > internet saved to ~/texmf/fonts. And it manifests only as a little delay > (with luahbtex) during dlownloading the fonts to PDF at the end of the > document visible if you are watching at the terminal. The PDF result is > equal, but I am worried that there is a hidden bug in luahbtex because > the difference is unexpected. > > I teseted this with OpTeX macros, they never use mode=harf. So I expect the > same behavior with both engines. The example for testing is somewhat more > complicated and it is exactly described at > > https://tex.stackexchange.com/questions/735071/ > > The main question is: why luatex behaves correctly (with no delay during > downolading fonts) but luahbtex presents a delay in given cases? Where is > the difference? Can the luatex developers explain this? > > Thank you > > Petr Olsak > > under linux /usr/bin/time always reports luahbtex slower of about 5seconds, but I was not able to find why /where.
-- luigi
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